http://developer.netscape.com/docs/manuals/js/core/jsguide/obj2.htm
An article explaining the prototype-based implementation of OOP, inheritance, and classes in JavaScript. Concepts are illustrated with numerous code samples. Netscape makes a special effort to explain JavaScript's OOP in terms that C and Java coders will understand.
Tutorial)http://java.sun.com/docs/books/tutorial/java/concepts
Although intended as a primer for aspiring Java programmers, this site covers the basics of OOP in generalized terms and makes good background reading for OOP in any language.
